The 3/4" NPT is a tapered design of the 1"-14 SAE bolt thread pattern. They are similar with the exception of this taper.

We've modified our 3/4" NPT so it remains within the specs of both the 3/4" NPT and 1"-14 SAE style threads.

THIS modification prevents the adapter from cutting into the threads of the female filter (or auxiliary device) as
standard 3/4" NPT adapters are designed to do. The threads on a standard fully tapered unmodified 3/4" NPT are larger than
the female threads. The ridges are designed to cut into the valley's of the female threads - it's how they tighten and seal.
Our modified thread adapter remains within the specs of the 3/4" NPT female and will NOT damage or cut into the filter housing
or its threads.

BONUS - Our 3/4" NPT thread permits all 1"-14 SAE threaded devices to be used providing for more auxiliary options

You will not notice a taper but you will notice better fitting and a more secure device attachment!!!

CARE...

Oil as you do your barrel. WD-40 works great as do all gun oils. MagPhosphate crystals store the oils and provides a long lasting barrier against rust

What's Included:

(1) 1/2-28 x 3/4" NPT MagPhosphate Barrel Thread Adapter

"FREE SHIPPING"

ATF registration is NOT required for ORION-TACTICAL.US adapters provided they are used solely for their intended purpose.
It is a violation of Federal law to muffle the report of a firearm with an unregistered device/assembly. It is Federally permissible for an individual to make such a
device but must first register and acquire ATF approval. If this is or becomes your intent it is your responsibility to review ATF regulations and seek their guidance
so you may remain lawful in your endeavor. It is not our place to recite laws but want you to know where to get authoritative guidance. We are not responsible for
anyone's violation of Federal Law or unintended use of these products - Thank You

We ship to continental USA, Hawaii, Alaska, Puerto Rico, Guam and all other direct USPS
delivery locations. If you have any questions please ask.

****** Thank You *****
* Adapters are "Made in the USA" with High quality USA Steel